Coal-elevator



(No Moae1. 2 sheets-4.1111111; 1.

W. LAWTON. 1

GIOAL ELEVATOR. 1

No. 326,129. Patented sept. 15,1885.

W. LAWTON.

GOAL ELBVATOR -V UNITED STATES PATENT OFFICE.

y WALTER LAWTON, OEWINTHEOP, MASSACHUSETTS.

coAL-ELEvAToR.

SPECIFICATION forming part of Letters Patent No. 326,129, datedSeptember 15, 1885. l

A v i I Applicntionliled February 1], i855.` (No model.)

at one side of the vessel or receptacle by a single endless series ofelevator-buckets.

rlhe invention also has for it's object to pro-` vide improved means forraising and lowering the seriesI of elevator-buckets to accommodate themtothe height of `the coal in the vessel, and to the rise and fall of thetide.

The invention also has foritsobject to provide means whereby the lowerportion o f the series'of buckets can be moved laterally, solas to reachdifferent parts ofthe hold or receptacle from which the coal is taken.

'Io these ends my invention consists in the improvements which I willnow proceed to describe and claim.

Of the accompanying drawings, forming a part of this specification,Figure 1 represents a side elevation of an apparatus embodying myimprovements and a section of a vessel. Fig. 2 represents an enlargeddetail. represents a modification. Fig; 4 represents a perspective viewof `a part of the apparatus.

. Thesame letters of reference indicate the same parts in all the gures.

In carrying out my invention I provide an endless series of scoops orbuckets,a, connected bylinks or other suitable devices, so as to becapable of moving over two drums or rollers,

b b. The buckets and their drums b b are supported by a frame composedof two parts or sections, 2 3. The section 2 isstraight and enters thevessel or receptacle from which coal is to be taken, while the section 3is curved and extends from the upper end of the section 2 over thevessel or receptacle to an elevated point at one side of the verticalspace over said receptacle.

spectively, in the upper end of the section 3 and in the lower end ofthe section 2, and the series of buckets are caused by the describedform of the supporting and guiding frame to Eig. 3-

The drums b bare'journaled, re-

and conduct it laterally to the point ofV discharge. By my improvement,there-fore, the apparatus is materially simplified and cheap-` ened. f

' The frame 23 is provided with parallel guide rails or rods c c, (shownin Fig. 2,) between which run anti-friction rolls dd, journaled on thebuckets a, said rails and rolls enabling the buckets to move with theminimum of fricf tion, particularly on the curved sectionof the frame.the buckets a a, said pans having end Walls or flanges, e e'. -The pansand their iianges receive a part of the coal from the buckets when theytip in approaching the upper end of the section, and thus prevent thescattering and loss of the coal.

The frame 2 Sis preferably supported by a' vertically-movable frame orelevator, g, to 'which the section 3 is attached. The elevator ispartially counterbalanced by a weight, h, suspended by a chain, t',which is attached to the elevator and passes over suitably-arrangedpulleys journaled in fixed supports, from'the elevator to the-weight,.the object being` to have the elevator and its attachments some` whatheavier-than the weight, so that it will descend automatically toaccommodate the" I prefer to interpose pans e e between y IOO caused toimpel the' buckets. Said drum is octagonal or ofequivalent form, eachside of the drum being of about the same width as each bucket and ofeach intermediate pan, so that the drum is engaged positively with theseries of buckets.

Steam may ybe generatedon the elevator or may be conveyed to the enginefrom a stationary boiler through a flexible pipe. v f

The lower section, 2, is .connected to the upper section by a pivot, n,so that the said lower section lis adapted to be moved laterally,` andthus enable the buckets to reach different parlts of the hold orreceptacle containing the coa oy represents a frame or structure inAwhich V*the elevator g is located. Said structure has a recess, p,formed to receive the elevator when 'the buckets a arev not in use. The'bot-` tom'of the elevator has -wheelsqywhich enable the elevator t-obe-moved into and out of said recess, `thewheels bearingon tracks rbelow the recess.

b? b2 represent anti-friction rollers ou the elevator, bearing againstvertical guides vforming-.parts ofthe frame o.

Figu shows a modification in which a secondary frame, s, is connected tothe elevator by two vertical bolts,t t. The curved section 3 is attachedto the frame s instead of to the elevator; When one ofthe bolts t isremoved, thevot-her vbolt constitutes a pivot on which the frame s`mayswing horizontally to move the'frame2 3 with the'elevator-bucketsy awayfrom 'their operative position and place said frame against .the side ofthe structure r, so that it'will be out of theway. When thismodicationis employed,the elevator will not be made movable into therecess. f i

It is obvious that the frame 2 3-may be attached to a support which isnot movable vertically, or may be supported by a scow or vessel. Thesection 2 may be rigidly attached to the section 3 instead or" beingpivoted thereto, if preferred.

af ca represent rollerspivoted to the section 3 between the ends of therails cc on the two sections, to support the rollersv d' at the openspaces between the ends of said rails.

c nAsit is desirable Yto unload a vvessel from twohatches at the sametime,to prevent straining of the hull by an unequal distribution ofweight, I provide two of the endless series of bucketsand theirsupporting-and guidingde- `vices above` described.

'12', combined with vertical vsaid rolls bear, as set forth..

The supporting devices of one of the series of buckets are made movableto enable the distance between the two series of buckets to be spaceover the'receptacle'from which material .is taken 'from the buckets, andto continuously support said loaded buckets, as set forth.

2.r An endless series of elevator-buckets, com bined with a supportingand guiding frame composed of thecurvedsection 3, attached to 'Yasupport,andfthesectionl 2, pi voted to thelower endof the curvedsectionyas set forth.'

3. TheV combination of the vertical-ly-mova ble frame or-elevator, Itheguiding-frame 2 3, attached thereto, and the endless seriesofelevator-buckets supported -and guided by said frame, as set forth.

'4. The curved guiding-frame,combined with the'endless series ofelevator-bucketsand the intermediate pans, vas set forth.

5.V The curved guiding-frame having parallel rails c o, combined withthe endless :series of buckets having rollers-dd, asset forth.

Y* 6. The vertically-movable elevator supporting the series of bucketsand their guidingi frame, and provided with a `motor whith moves withthe elevatorgwhereby said buckets are impelled,as set forth.

7. The elevator supporting the bucket-guid ing frame 2.3, and havingwheelsq, combined with the recess p, adapted to receive the elevator, asset forth. f

8. The sections 2 3, having the guide'rails c c, and rollers a a betweenthe proximate ends 9 ofthe rails, combinedy with the endless series ofbuckets having rollers d,fas set forth.

, 9. The vertically-movable elevatorsupportr ing the series of bucketsand their guidingframe, and provided gwith' anti-friction vrol-ls guideson which In testimony whereofI have signedl name to this speciiicatiominthe presen-ce of two sub. scribing 1 witnesses, this' 7 th day ofFebruary, 1885.

Witnesses:

O. F. BROWN, H. L.WHITE.

WALTER; LAwToN.

